Stoking-grate mechanism.



PATENTED APR 9 W. MOGLAVE. STOKING GRATE MECHANISM.

APPLIOATION "FILED APR-J2. 1906.

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. 21% human Np; 849,913. i I BATENTED APR. 9, 1907.

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STOKING GRATE MECHANISM APPLICATION IIPED APR. 12. 1906.

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VII 111114 we #W H .PATENTEDHAPAR. 9, 1967.

W. MOGLAY'E. v STOKING GRATE MECHANISM. P 11.21) APR 1 PATENTED APR. 9, 1907.

W. MGOLAVB. STORING GRATE MECHANISM.

APPLICATION FILED APR. 12, 1906. I

5 SHEETS-SHEET 5.

Witness cated by the arrow.

particularly is ,tion being of the operation of the Pi'ilihlliiii.

E VHJLIAM MeCLAVE OF SORANTON, PENNSYLVANIA, ASSIGNGR T0 hfieCLJ-QV BROOKS CUMPANY,. OF SCRANTON, PENNSYLVANIA, A CORPQRATEGIJ or reunsviiv um.

ISTOKINGQGRATE aiiseiianisai.

Specification of Letters Patent.

Patented April. 9, 1907.

Application filed April 12, 19b6. Serial 1%. 311,391.

To all 1 2 07721 it may concern:

Be it known that I, WILLIAM McCLAvn, a citizen of the United States, residing at Scranton, inthe .county of Lackawanna and State of Pennsylvania, have invented certain new and useful improvements in Stoki'ng- Grate Mechanisms; and I do hereby declare the following to be a hill, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to certain novel features in stoking-grate mechanism, and more in the nature of certain 5mprovements in the structure shown in my application for patent for staking-grate mech- 'anism filed August 4, 1905,. and. designated by'Serial No. 272,705.

The object in view is the more eflicientaccomplishment of the results sought to he at tained in my invention set forth in my abovementioned previous application for patent.

.In the accompanying drawings, Figure l is a longitudinal vertical sectional View of a grate mechanism embodying the features of the present invention. Fig. 2 is an. enlarged detail framneutary section taken.longitudi nally of tile grate. Fig. 3 isa transverse sectional view taken on the plane of line 3 I, of Fig. 2 and looking in, the direction indi- Fig. 4 is a view in top plan of a fragment of a grate-surface looking at the same if it occupied a horizontal plane. Fig. 5 is a view introht elevation of a furnace provided. with a 'stoking-grate mechanism embodying the features of the present invention, parts being broken away for the saving of space.

While it is to be noted that a number of the elements illustrated in the accompanying draw ings correspond to similar elements disclosed in my previous application above referred to g for the purpose of making the utility of the presentinvention obvious in this application, 1 will briefly describe the elements found in the former which are therefore not claimed herein.

In carrying out the present invention I preferably embody thesame in the form of an incline gratesurface, the degree of inclinaonly comparatively slight in view mecl'ianism as herein application and.

after set forth. This grate-surface is carried by certain carrier-bars or carriages l i, spaced apart at suitable distances, a greater or less number of carriages being eii'iph,; ,'e l, according to the size of the gratwsurface. Each of the carriages i at itsv lower end is mounted upon a suitalde bearer bar or plate 2, sustained by the usual bridgc wall 3. At the upper end each of the carriagesl rests upon a suitable ledge 4;, (indicated in dotted lines in Fig. 4 projecting inwardly from the front wall of the turn: to. Each of the carriages l is provided with a plurality oi. trunnion blocks or bearings 5, said bearings being spaced apart longitudinaliy of the respective carriages, and preferably consists siinp of a raised portion ol the edge oi the carriage, clearly indicated in Fig. 2, which formed With a semicircular recess and adapted to receive one of the trunnions or journals or" one. of the striking-grate bars 6. The hearing 5 is formed in the raised portion of the carriage in order that the grate-surluce may be spaced above the carriage for the grca portion thereof, so as to permit free circulation of air and to prevent deterioration of the carriage by the intense heat on the grate-surface.

irlounted upon the carriages l are the rocking gratcdiars 6, the number of bars employed being dependent upon the area' of the grate-surface required, which is'immaterial to this invention. Each of the bars is of sullicicut iengt to extend from one can riage to the other, as is best seen in Fig. 23', and each bar is provided with a trunnion or a iournal projecting from each end and in operation lying within the hearings for sustaining the grate-bar in position, while permitting rocking o! the same;

Each oi the grate-bars 6 is made up of a body portion havinga series ofsoclrcts 8, into each of which is adapted to be'inscrted the, shank 9 of a cap 10, said caps constituting the main wrtion oi the grate-surface. From each. of the bars 6 extend downwardly suitably-curved arms 11 ll, suitably spaced apart and carrying at their outer ends a rod 12, which. is disposed longitudinally of and parallelto the barge, so that said bar maybe caused to swing upon its journals 7 by syringe ing of the rod 12. The bars 6 are spaced apart longitudinally of the carriages 1 at the distance of caps, and wherrmore than two carriages respective carriages and at one end engages arms 11 on one side of the'carriage and one of I are thus arranged in series, each series being clamp 15, the cam nested with the re erenee engaging two of said arms 11,.extend- .pins 21 21, passed through a portion of the necessary for accommodating the caps and the interposed elements between the rows 1 are provided the bars 6, which. are in alinement' transversely of the grate-surface, have their ends connected. together, so that motion may be transmitted from the actuatedmechanism of one bar to all the other bars. The connecting means preferably consists, as seen in Fig. 3, of a shaft or red 13. which extends through a segmental slot 14 in the one of the arms 11, preferably extendin therethrough, and at the other end by pre ing therethrough. By engaging two of the the arms 11 on the other the shaft 13 is held rigid with respect to the operating-rods 12 and the bars to which said rods are connected.- Thus if the intermediate bar 6 rocked by actuation ofthe rod 12 thereof the rods 12 of the next contiguous bars at the ends oft he bar being actuated directly will be correspondingly moved.

It is of course. noted that the grate-bars 6 spaced longitudinally from the next series. each series of or their carriages 1 One of the rods 12 of grate-bars is engaged by a preferably being con 12 of the intermediate bar of a series. Each clamp 15 is carried by a pitman 16, which" extends longitudb" nally beneath the grate-surface, and, as best seen in Fig. 1, each of the pitmen projects through the front 'wall and extends to and ivotally engages a sliding block 17. Each of the blocks 1?,as seen in Figs. 1 and 5, is mounted within an oscillating frame or head 18. The, blocks 17 are preferably connected together by suitable transverselyarran ed plates'l t), which .XliLtOS are connecte to V the blocks by olts- 20; The blocks 1] are adjustable within'the head or frame 18, and said blocks are adapte to be. secured at various points of adjustment within the head or frame 18 by means of two outermost blocksinposition for engaging any one of the series of a ertures 22 22 formed in the guideway o the frame or head 18 for the boxes 17. The head or frame 18 is fixed to a trausversely arranged shaft 2,3,Which shaft is journaled in bearings carried by brackets 24: 24, fixed to the furnace-front. Fixed to the frame or head 18 and extending outwardly therefrom are I suitable brackets 25 2-"), which brackets are connected by a bolt or pin 36. The pin 26 is engaged by a )itman 27 lwtween the brackets 25,.the said pit man being connected \vitln the ranlc'lfi of a power-shal'l 2!).

The shaft 2!) receives power from any suitable source and op rates to reciprocate the vpitrnan 27 and to oscillate the frame or head 18, which oscillation of the head rocks the .shaft 23, to which it is connected Thus it will be observed that when the shaft 29 is driventhe oscillating head 18 will be operated and the pitmen 16' caused to re ciprocate. When the blocks 17 are arranged, as indicated, in direct. alinement with the shaft 23, (said shaft being of two-part formation, one fixed to and extending laterally from each side of the. head 18,) only a cornparatively small amount of longitudinal movement will be imparted to the pitmen' 1t). When a greater amountof moven'ient 1S desired, the blocks 17 are adjusted away from the hue of shaft 23, and tin farther that the blocks are adjusted the greater will be the longitudinal thrust of the pitmen. For the purpose of convenience 1 preferably provide the outermost blocks 17 with apertures I50, adapted to receive an operatingtool.

The shaft '33 is connected with mechanism (illustrated in Figs. 5 and 1) for aidin inthe automatic feeding of fuel, which mec tanism has a distinct classification in the Patent ()flice from a grate mechanism and is therefore not described or claimed herein. I

From the foregoing itwill be observedthat all of the grate-bars 6 may be rocked either continuously or intermittently by suitable driving of the shaft 29, and the ca islt) will be caused to oscillate eorresporu ingly for feeding fuel down the grate-surface.

Each of the caps 11! consists of a shank t), forwardly-extcnding fingcrs'31 31, and rearwartlly-extending fingers 32 3'2. The forwarrlly-extending fingers 31 are. prefer-ah] connected by a transverse web 33, said we being struck on the areof a circle concentric to the pivotal mounting of the bar 6.

The feeding mechanism above referred to delivers the fuel across a dead-plate 34, and a small space is left between the edge of the dead plate and the forwanlly-projeeting fingers of the first row of caps 10, and in order to fill the said space to revent running through of fine fuel a move 'le ca 35 is pivotally mounted in said space, sait cap being pivoted to suitable lugs carried by .a transversely-arrang edbar 36, secured to and supported by the carriages 1. The rear face of .the cap 35 is curved to conform to the curvature o the web 33 of the first cap 10, and said ca 35 rests against said webat all times, the

-we being'of sufficient width to permit the movement of the cap 11) without passing upwardly out of contact with the cap 35.

Arran ed between each two rows of ca s 10 are fil er-caps 37, arranged in a row. Tffe caps 37 are each made up of forwardly and rearwardly extending fin ers and a tlownwardlyextending,preferab y tapering, shank. Abarit)isdisposedbeneatheaehrow of filler-cans 257 and is provided with a socket s for the reception of the shanks 38. The con-- equal to the width of the space between the carriages 1. Each end of each bar 39 is provided with an arm 41, which extends down- Wardly and rearwardly therefrom and is pivotally supported-by means oi a bolt 42,- passed through the carriage 1. As a matter,

of convenience each bolt 2 may be caused to support an arm 41 on each side of the carriage 1, as the bars 39 are of course arranged in ahnement. Forwardly of each of the bars 39 each carriage 1 is provided with a lateralbg-eitending lug 43, against which the rc- I spective bar 39 normally rests. It is here to he observed that each arm 41 is carried well rearwardly, so that the center of gravity respectto the bar 39 and arm 41 is a considerable distance to the front of the pivot pin or bolt 42, whereby the retention of the bar 39 against the lugs 43 under normal conditions is assured. At the same time the pivotal su )porting of the arms 41 insures freedom oi the bar 39 to move rearwardly when necessary.- Under normal conditions the forward fingers of the caps 37 normally overhang a yortion of the rear fingers ol the caps 10' and preferably contact with the curved surfaces of said fingers, such curved sif-laces being concentric with the pivotal mounting of the caps 10. The caps 37 are not of su'll icient width to close the space between two rows of caps 10, and I therefore interpose a row of supplemental tiller-bars 44 between the row of caps, 37 and the next lower row of'eaps 10. The filler-bars 44 are pivotally mounted on rearwardly-extending. webs 45, preferably formed integral with the res ective bar 39. The bars 44 are arranged Wit 1 the center of gravity in the rear 01; the pivot-point, and each filler-bar is provided with. rearwardlyextending fingers adapted to normally-lie in contact with the web 33 of the next succeeding cap 10. Each of the filler-bars 44- is also formed with forwardly-extending fingers which are preferably overhung by the rearwardly extending fingers of the caps 37.

It is to be observed that'in operation as the grate-bars 6 are oscillated the caps 10 will he swung vertically with out interference by c0ntiguous elements ofthe-grate-bar and with out ert ating an opening in the grate-surface. The filler-bar 44 retains its close contact with the cap 31, a s'does also the cap 37. The weight (if the respective filler-bars 44 is not sulhcieitt to cause the Wear produced by contact with the caps 10 to be material, and any growing of the filler-bar44, due toexeessive heat, Will-doe accommodated by pivotal movement. of "the ,bar. The caps 37 normally contact with the rearwardly-ektending fingers of the caps 10, and it is well. understood that when metal, and particularly east-iron, is subjected to continued heat it will grow, or, in other words, increase in size, due to a swelling or disloeating of the molecules comprising the metal. This grmving of the c: ps 37 will be accommodated by a swinging movement of the bars 39, the bars temporarily relieving the contact with the lugs 437 However, the continued wear on the caps 37 wi l soon permit the same to be restored to their iormerposition with bars 39 in Contact with lugs 43.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is--- 1. In a stolcing-grate mechanism, the com- Lination with rockinggrate lnnsspaced apart, and caps carried thereby, of relnmiabie (it rcaps interposed between the roekingdmr caps andmovable iodependentiy of said rocking-barcaps.

2. in a stokint -grate meclnmisnz, the comapart, and caps carried thereby, ol' yirotai mounted bars disposed between said rot-hing grate-bars and overlmlaneetl at one side ot-its pivot, and lille'iea1 s removablly carried by said pivotalEy-niounted bars in position for at times resting by gravity upon some of the rocking grate-bar cups.

3. In a stoking-grate nechanisn'i, the conibinatiori with rocking grate-bars spaced apart, and caps therefor, of tiller-caps interposed between the grate-bar raps oi the respective grate-bars, shanks t or said tiller-caps, and means pivotally and reinovnbly support ing said filler-bar shanks independently of the rocking grate-bars.

4, In a stokin -grate mechanism, the combination with rocking grate-bars stoned apart, and caps carried the by, cit l rcaps pivotaliy and removably supported between the rocking gratebar caps independently thereof.

5. In a etching-grate n'iechanisin, the combination with rocking grate-bars spaced apart, and caps therefor, of pivotallymounted bar interposed etween said grates bars and independent tl'hireol, said pi otally mounted barbeing formed with sockets, and filler-caps haviug'shanlts extending into said sockets and reinovably supported tl' ereby.

6. Ina stoking-grate mechanism, the combination with rocking grate-bars spaced between said grate-bars, arms extending rearwardly from said interposedbar, *ncans ,pivota-lly carrying said arms, and filler-caps carried by said interposed bar.

7. In stoking-grate mechanism, the conibination with rocking grate-bars spaced 'apart, andv capstherefor, of a bar interposed between said grate-bars and independent bination with rocking grate-bars soared apart, and caps therefor, of a barinterposed thereof, and mounted to swing laterally therebetweeu, and removable filler-caps for said interposed'bar.

8. In a stoking-gra bination with rocking grate-bars spaced apart, and caps therefor, .01" a pivotally-sup- )orted bar interposed between said grateiJfi-l'h, filler-caps carried by said interposed bar, and tiller-bars interposed between said tiller-caps and the ca )s of one of said gratebars, said filler-bars lieing pivotally carried by said interposed bar.

9. In a stoking-grate mechanism the combination with rocking grate-bars spaced apart and caps therefor,of a ivotally-mounted bar interposed between sa d grate-bars, filler-caps carried by said interposed bar and extending forwardly-of the same, lugs projecting rear 7 wardly from said interposed bar, and a lillercontact with the caps of one of t 30 bar plvotally carried by said In s. 4 10. In' a stokiug-grate inec a'nism, the combination with rocking grate-bars spaced apart, and caps therefor, of a swinging bar interposed between said,grate-.bars, fillercaps carried by the swinging bar and means projecting in the pathoimovement of the swinging bar for normally sustaining the same with one edge of the ca is thereot in liegrate-bars. .11, In a stoking-grate mechanism, the

I o te' mechanism the com bar.

combination with carriages spaced apart,

grate-bars journaled in said carriages and also spaced apart, and caps for said gratebars, of a bar pivotally.jsup orted by said carriages between said gratears; the center of gravity of therpivoted bar bein at one side of the ivot, l ugs projecting ater'ally from one o downward bar, and ii the carriages for preventing er-caps" carried by said pivoted 12. In a Stoker-grate mechanism, the combination with carriages spaced apart, grate-bars journaled therein, actuating mechanism connected with said grate-bars for rocking the. same on their journals, caps carried by said grate-bars, apivotally-mounted bar arranged between each two of the gratebars, lugs projecting from the carria es for normally sustaining the interposed bars against downward movement upon their pivots while permitting upward movement tliereof, and caps carried by said interposed bars. I

In testimony whereof I allix nly'signatur in presence of two witnesses. v.

W ll LIAM M 00] AVE.

Witnesses:

l). J. DAVIS, 11, A. Kmm ow.

pivotal movement of said pivoted 

